调整

app/controllers/subjects_controller.rb

@@ -247,7 +247,7 @@ class SubjectsController < ApplicationController
 
   def send_to_course
     @course = Course.find_by!(id: params[:course_id])
-    stages = @subject.stages.where(id: @subject.stage_shixuns.where(shixun_id: params[:shixun_ids]).pluck(:stage_id))
+    stages = @subject.stages.where(id: @subject.stage_shixuns.where(shixun_id: params[:shixun_ids]).pluck(:stage_id)).reorder("stages.position DESC")
     order_ids = params[:shixun_ids].size > 0 ? params[:shixun_ids].reverse.join(',') : -1
     course_module = @course.course_modules.where(module_type: "shixun_homework").first
     homework_ids = []